steezyella steezyella

29-03-2022
Mathematics

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the length of a rectangle is 9 less than twice its width. it's area is 18 meters. find is dimensions
pls help!!

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Pnkfloydahm Pnkfloydahm

29-03-2022

Answer:

6 x 3

Step-by-step explanation:

xy = 18

x = 2y - 9

systems of equations. solve the quadratic equation

2x^2 - 9x - 18 = 0

(x-6)(2x+3) = 0

Solution is x=6. So y = 2(6)-9.

{6,3}

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